Epiboly - mechanism of gastrulation, Biology

EPIBOLY -

  1. The epibolic movements occur only in the prospective ectodermal blastomeres.
  2. In the blastula of frog, migration and rearrangement of microceres over megameres is called epiboly.
  3. At one specific point micromeres do not cover megameres, this place is known as gastrulation slit.
  4. This slit is blastopore of future embryo. Formation of blastopores occurs in grey-crescent area.
  5. Some megameres start budding as result of this budding micromeres are formed.
  6. These micreomeres also cover the megameres. This process is known as Apiauxesic.
  7. Example - In the eggs of Ctenophora, Mollusca, Annelida

868_epiboly.png

Posted Date: 10/4/2012 5:31:09 AM | Location : United States







Related Discussions:- Epiboly - mechanism of gastrulation, Assignment Help, Ask Question on Epiboly - mechanism of gastrulation, Get Answer, Expert's Help, Epiboly - mechanism of gastrulation Discussions

Write discussion on Epiboly - mechanism of gastrulation
Your posts are moderated
Related Questions
THYROID GLAND - It develops from the endoderm of the embryo. Th e thyroid gland is the largest endocrine gland located anterior to the thyroid cartilage of the larynx

Mitral Valve Repair :  Whenever possible, the valve has to be repaired rather than replaced. Preoperative investigations and a TEE done on the operating table will help the surg

Which of the following most accurately explains the meaning of a repression lag? A. A repression lag refers to the time that it takes for the last full-length mRNA transcript t

Nutrient Cycles All ecosystems have certain common basic features of structure and function. They all have living and non-living components through which there is a flow of en

OLIGOSACCHARIDES They are small-sized polymers of monosaccharides having 2 - 6 simple sugars, occasionally upto 9 - 10. Oligosaccharides are soluble in water, sweet to t

Which is the plant tissue responsible for the filling of the space between other tissues? The plant-filling tissue is generically known as parenchyma. The plant parenchyma can

What is Muscle tissue explain briefly? Remember that a skin cell, in addition to the genetic information that allows it to form into a skin cell, also has all of the genetic in

a) Mention the number of primers needed in each cycle of polymerase chain Reaction (PCR) . Write the role of primers and DNA polymerase in PCR. b) Give the characteristic fea

Define drawbacks for underwater weighing method? Since the major drawbacks with UWW method are that the subject needs to be totally submerged underwater and exhale all of the a

what is phylum protozoa